Too much growth can be a problem too, according to this other article strings are at most 255 bytes long: https://retro64.altervista.org/blog/garbage-collectio

Too much growth can be a problem too, according to this other article strings are at most 255 bytes long: https://retro64.altervista.org/blog/garbage-collection-commodore-64-basic-to-handle-it/ https://retro64.altervista.org/blog/garbage-collection-commo... Which would limit the loop to 1 + 2 + 4 ... 128 = 255. You could start off with this, but making it work and filling exactly 8000 might be too complicated.